What are the differences between lists and dictionaries?
Answer:
Differences between lists and dictionaries are:
- Lists are ordered collections of items that can be of any data type and can be changed or modified. Dictionaries are unordered collections of key-value pairs , where each key is associated with a value . The keys and values can be of any data type, but the keys must be unique and immutable.
- Lists are created by using square brackets [] or the list() function , and the items are separated by commas . Dictionaries are created by using curly braces {} or the dict() function , and the key-value pairs are separated by commas and a colon : .
Additional points:
- Lists allow random access to items using indices , which are numbers that represent the position of the items in the list, starting from 0. Dictionaries allow random access to values using keys , which are identifiers that are used to look up the corresponding values in the dictionary.
- Lists allow duplicate items , meaning that the same item can appear more than once in the list. Dictionaries do not allow duplicate keys , meaning that each key can only appear once in the dictionary.
- Lists are mutable , meaning that they can be changed or modified after they are created. Dictionaries are also mutable , meaning that they can be changed or modified after they are created.
